Organic fertilizer maintenance method, maintenance tank and integrated maintenance equipment for realizing zero discharge of stock household garbage leachate

A domestic waste and leachate technology, applied in the field of environmental engineering, can solve problems such as unsatisfactory advanced treatment of leachate, and achieve the effect of avoiding secondary pollution and improving fertilizer efficiency

Active Publication Date: 2020-08-18
NANJING UNIV +1
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Problems solved by technology

[0007] Aiming at the unsatisfactory effect of advanced treatment of existing leachate, the present invention provides a method and equipment for maintaining granular organic fertilizers using landfill leachate, combining leachate treatment technology with granular organic fertilizer production technology, using pre- The treated leachate tail water maintains the granular organic fertilizer to achieve zero discharge of the leachate tail water

Method used

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  • Organic fertilizer maintenance method, maintenance tank and integrated maintenance equipment for realizing zero discharge of stock household garbage leachate
  • Organic fertilizer maintenance method, maintenance tank and integrated maintenance equipment for realizing zero discharge of stock household garbage leachate
  • Organic fertilizer maintenance method, maintenance tank and integrated maintenance equipment for realizing zero discharge of stock household garbage leachate

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Embodiment 1

[0085] In this embodiment, the above-mentioned integrated maintenance equipment is used to maintain the semi-finished granular organic fertilizer with the leachate as the maintenance water.

[0086] In the present embodiment, the outlet of the quicklime dewatering tank 2 is provided with a non-woven fabric filter screen to intercept fine dust (such as quicklime and slaked lime dust formed after absorbing water); Three times that of , the replacement frequency is once a day;

[0087] The leachate in this embodiment is the leachate tail water after pretreatment, and its specific treatment method and the device used are the same as CN1351969A-a kind of purification treatment method of landfill leachate water, specification part embodiment 1; The total amount of sprayed leachate W is 25000kg / d; the area of ​​curing tank 1 is 500m 2 , the stacking height of the organic fertilizer is 2m, and the temperature of the leachate in the leachate sump is tested t 0 is 25°C.

[0088] Such...

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Abstract

The invention discloses an organic fertilizer maintenance method, a maintenance tank and integrated maintenance equipment for realizing zero discharge of stock household garbage leachate, and belongsto the technical field of wastewater recycling. An granular organic fertilizer is maintained by using the maintenance tank, percolate is continuously sprayed into the maintenance tank as maintenance water during maintenance, and hot air is forcibly introduced into the maintenance tank, so that moisture in the percolate is evaporated and dispersed into gas in the maintenance tank; the integrated maintenance equipment comprises a maintenance tank and a quicklime dehydration tank, an air outlet of a centrifugal fan is communicated with the quicklime dehydration tank, and the quicklime dehydrationtank is optionally and directly communicated with a drainage and air distribution device of the maintenance tank or communicated with the drainage and air distribution device of the maintenance tankthrough a heat exchanger. According to the invention, zero discharge of leachate tail water can be realized, removal of pollution elements in leachate is realized in a recycling form, and the fertilizer efficiency of the granular bio-organic fertilizer is improved.

Description

technical field [0001] The patent of the present invention relates to the field of environmental engineering, and specifically relates to an organic fertilizer maintenance method, a maintenance tank and integrated maintenance equipment for realizing zero discharge of leachate from domestic waste. Background technique [0002] There are a large number of stock garbage landfills in my country, occupying a large amount of land, and causing serious pollution problems. Using "urban mining" technology to realize the resource utilization of stock garbage mining and sorting is the best solution to fundamentally solve the problem. For example, the use of humus soil organic matter resources in stock garbage to produce granular bio-organic fertilizers; and the use of humus soil under the sieve obtained after mining and sorting stock landfills to treat leachate or domestic sewage technology has also been verified and promoted in engineering projects Application (such as: the Chinese inv...

Claims

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Application Information

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IPC IPC(8): C02F1/04C05F7/00C05F11/02C05G5/12B01D53/28C02F103/06
CPCC02F1/048C05F7/00C05F11/02C05G5/12B01D53/28C02F2103/06Y02A40/20
Inventor 吴军罗培康朱俊伟杨智力吕宜廉李丹阳李志远马海涛郭小境
Owner NANJING UNIV
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